Surface configuration of a gearshift



FIG. 1 is a right, rear perspective view of a surface configuration of a gearshift according to my novel design, the left, rear perspective view being mirror symmetrical;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof; and,

FIG. 6 is a top view thereof.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a surface configuration of a gearshift, as shown and described. 